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    Science. 1989 Dec 22;246(4937):1611-3.

    Membrane anchoring of a human IgG Fc receptor (CD16) determined by a single amino acid.

    Source

    Becton Dickinson Monoclonal Center, Inc., Mountain View, CA 94043.

    Abstract

    CD16 is a low-affinity immunoglobulin G (IgG) Fc receptor that is expressed on natural killer (NK) cells, granulocytes, activated macrophages, and some T lymphocytes. Two similar genes, CD16-I and CD16-II, encode membrane glycoproteins that are anchored by phosphatidylinositol (PI)-glycan and transmembrane polypeptides, respectively. The primary structural requirements for PI-linkage were examined by constructing a series of hybrid cDNA molecules. Although both cDNA's have an identical COOH-terminal hydrophobic segment, CD16-I has Ser203 whereas CD16-II has Phe203. Conversion of Phe to Ser in CD16-II permits expression of a PI-glycan-anchored glycoprotein, whereas conversion of Ser to Phe in CD16-I prevents PI-glycan linkage.

    PMID:
    2531919
    [PubMed - indexed for MEDLINE]

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